fix(deps): update dependency io.grpc:grpc-bom to v1.68.0 (#12309)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

smoke-tests/build.gradle.kts

@@ -23,7 +23,7 @@ dependencies {
   api("org.spockframework:spock-core")
   api(project(":testing-common"))
 
-  implementation(platform("io.grpc:grpc-bom:1.66.0"))
+  implementation(platform("io.grpc:grpc-bom:1.68.0"))
   implementation("org.slf4j:slf4j-api")
   implementation("io.opentelemetry:opentelemetry-api")
   implementation("io.opentelemetry.proto:opentelemetry-proto")

smoke-tests/images/grpc/build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
 }
 
 dependencies {
-  implementation(platform("io.grpc:grpc-bom:1.66.0"))
+  implementation(platform("io.grpc:grpc-bom:1.68.0"))
   implementation(platform("io.opentelemetry:opentelemetry-bom:1.0.0"))
   implementation(platform("io.opentelemetry:opentelemetry-bom-alpha:1.0.0-alpha"))
   implementation(platform("org.apache.logging.log4j:log4j-bom:2.24.0"))